Plasma display panel and method of manufacturing exhausting hole of the plasma display panel

Abstract

A method of easily manufacturing an exhaust hole of a plasma display panel, the method including the operations of arranging a laser on one side of a substrate and arranging a reflective plate in line with the laser on the other opposite side of the substrate, radiating a laser beam of the laser to the substrate, and forming the exhaust hole by cooling the substrate.

1 . A method of manufacturing an exhaust hole of a plasma display panel, the method comprising;
 arranging a laser on one side of a substrate and arranging a reflective plate substantially in line with the laser on the other opposite side of the substrate;   radiating a laser beam of the laser to the substrate; and   forming the exhaust hole by cooling the substrate.   
     
     
         2 . The method of  claim 1 , further comprising removing pieces that are separated from the substrate due to the cooling. 
     
     
         3 . The method of  claim 1 , further comprising cutting an end of the exhaust hole. 
     
     
         4 . The method of  claim 2 , further comprising cutting an end of the exhaust hole. 
     
     
         5 . The method of  claim 1 , wherein:
 a horizontal cross-section of the exhaust hole is substantially circular, oval or elliptical; and   an area of an end of the exhaust hole that faces the laser is greater than an area of an end of the exhaust hole that faces the reflective plate.   
     
     
         6 . The method of  claim 2 , wherein:
 a horizontal cross-section of the exhaust hole is substantially circular, oval or elliptical; and   an area of an end of the exhaust hole that faces the laser is greater than an area of an end of the exhaust hole that faces the reflective plate.   
     
     
         7 . The method of  claim 1 , wherein the laser is a YAG laser. 
     
     
         8 . A method of manufacturing an exhaust hole of a plasma display panel, the method comprising;
 arranging electrodes on a substrate;   arranging a dielectric layer on the substrate to cover the electrodes;   disposing a laser to face one of the substrate and the dielectric layer and disposing a reflective plate substantially in line with the laser to face the other one;   radiating a laser beam of the laser to the substrate and the dielectric layer; and   forming the exhaust hole by cooling the substrate and the dielectric layer.   
     
     
         9 . The method of  claim 8 , wherein:
 the laser is disposed to face the substrate; and   the reflective plate is disposed to face the dielectric layer.   
     
     
         10 . The method of  claim 8 , further comprising cutting an end of the exhaust hole. 
     
     
         11 . The method of  claim 8 , further comprising removing pieces that are separated from the substrate and the dielectric layer due to the cooling. 
     
     
         12 . The method of  claim 8 , wherein:
 a horizontal cross-section of the exhaust hole is substantially circular, oval or elliptical; and   an area of an end of the exhaust hole that faces the laser is greater than an area of an end of the exhaust hole that faces the reflective plate.   
     
     
         13 . The method of  claim 8 , wherein the laser is a YAG laser. 
     
     
         14 . A plasma display panel comprising:
 a first substrate; and   a second substrate disposed to face the first substrate, defining an internal space together with the first substrate, and being coupled to the first substrate,   wherein:
 an exhaust hole through which an impure gas within a discharge space is exhausted is formed on one of the first and second substrates; and 
 an area of an end of the exhaust hole is greater than an area of the other end of the exhaust hole. 
   
     
     
         15 . The plasma display panel of  claim 14 , wherein an area of an end of the exhaust hole that faces the outside of the plasma display panel is greater than an area of an end of the exhaust hole that faces the internal space. 
     
     
         16 . The plasma display panel of one of  claims 14 , wherein the exhaust hole comprises:
 a first exhaust part having a horizontal cross-section that narrows in a direction from the end facing the outside of the plasma display panel to the end facing the internal space; and   a second exhaust part extending from the first exhaust portion and having a horizontal cross-section whose area is substantially constant.   
     
     
         17 . The plasma display panel of one of  claims 14 , wherein the exhaust hole has a horizontal cross-section that substantially narrows in a direction from the end facing the outside of the plasma display panel to the end facing the internal space. 
     
     
         18 . The plasma display panel of  claim 17 , wherein the exhaust hole has a horizontal cross-section that substantially linearly narrows in the direction from the end facing the outside of the plasma display panel to the end facing the internal space. 
     
     
         19 . The plasma display panel of one of  claims 14 , wherein the end of the exhaust hole that faces the outside of the plasma display panel and the end of the exhaust hole that faces the internal space are cut. 
     
     
         20 . The plasma display panel of one of  claims 14 , further comprising a dielectric layer formed on the second substrate facing the first substrate,
 wherein the exhaust hole is formed through the second substrate and the dielectric layer.